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AT89C5122

C51 Microcontroller with USB and Smart Card Reader Interfaces

Atmel Corporation 

AT83R5122, AT8xC5122/23

Product Description

Table 1. Product versions

Features

Packages

Program memory

Internal Data E2PROM

Embedded bootloader

Features

VQFP32,

QFN32

packages

PLCC68,

VQFP64,QFN64

packages

AT8xC5122/23 products are high-performance CMOS derivatives of the 80C51 8-bit

microcontrollers designed for USB smart card reader applications.

The AT8xC5122 is proposed in four versions :

- ROM version referenced AT83R5122 is only factory programmable.

- CRAM version without internal data E2PROM. The CRAM device implements a vola-

tile program memory which is programmed by means of an embedded ROMed

bootloader which transfers the code from a remote software programming tool called

FLIP through UART or USB interfaces.

- Flash version without internal data E2PROM. At power-up, the program located in the

flash memory is transferred into the CRAM then executed.

The AT83C5123 is a low pin count of the AT8xC5122 and is proposed in ROM version

with or without internal data E2PROM. The ROM device is only factory programmable.

The AT8xC5122DS is a secure version of the AT8xC5122 on which the external pro-

gram memory access mode is disabled.

AT83C5122

AT83R5122

VQFP64

QFN64

Die Form

32KB ROM

No

No

AT85C5122

PLCC68

VQFP64

Die Form

32KB CRAM

No

Yes

AT89C5122

VQFP64

QFN64

32KB E2PROM

No

Yes

All features are available

AT89C5122DS

VQFP64

QFN64

32KB E2PROM

No

Yes

All features are

available

except External

Program Memory

Access

AT83C5123

VQFP32

QFN32

Die Form

30KB ROM

No

No

Features not

available :

- Keyboard Interface

- Master/Slave SPI

Interface

- External Program

Memory Access

Reduced features :

- Only 12 I/O with up

to 4 LED Outputs with

Programmable

Current

3

4202F–SCR–07/2008

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